Display screen or portion thereof with icon



FIG. 1 is a front view of a first embodiment of a display screen or portion thereof with icon showing our new design; and,

FIG. 2 is a front view of a second embodiment thereof.

The dot-dash broken line showing of the display screen or portion thereof is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 